Synthesis of Iron Nitrides FexN (x: 2, 2-3, 4, 16/2) by Nitrogenizing .ALPHA.-Fe in Ammonia Gas, and Magnetic Properties of The Bulk Sample of Fe16N2.

• Nagatomi Akira

  Graduate School, Niigata University

• Kikkawa Shinichi

  ISIR, Osaka University

• Hinomura Toru

  Graduate School, Osaka University

• Nasu Saburo

  Graduate School of Engineering Science, Osaka University

• Kanamaru Fumikazu

  Niigata University

Bibliographic Information

Other Title

• 磁石・磁性材料の化学　ＩＩ　　α鉄のアンモニア窒化による窒化鉄ＦｅｘＮ（ｘ：２，２～３，４，１６／２）の合成とＦｅ１６Ｎ２バルク試料の磁性
• アルファテツ ノ アンモニア チッカ ニ ヨル チッカテツ FexN x 2 2 3 4 16 2 ノ ゴウセイ ト Fe16N2 バルク シリョウ ノ ジセイ

Abstract

Iron nitrides were prepared by nitrogenizing α-iron in ammonia gas at temperatures from 100°C to 700°C. In the case using iron foils as a starting material, Fe_2-3N and Fe₄N were formed as a main crystal phase at the temperature ranges of 450-700°C and 250-400°C, respectively. A crystal phase like to Fe₁₆N₂ was formed at 210°C, but its XRD and Mössbauer data were too insufficient to identify as Fe₁₆N₂. While bulk Fe₁₆N₂ was formed by nitrogenizing iron fine powder with the diameter of about 20nm at 110°C for 10days, but small amounts of Fe₃N coexisted as a second phase with Fe₁₆N₂ at 120°C for 10days. Crystal structure of Fe₁₆N₂ was refined by Rietveld method. The average magnetic moment of three kinds of Fe atoms in Fe₁₆N₂ was evaluated to be 2.52μB on the basis of its Mossbauer data, the value of which was larger by 15% than the magnetic moment of α-Fe. The saturation magnetization of the Fe₁₆N₂ powder was also larger by about 14% than that of the α-Fe powder before nitrogenizing.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 46 (2), 151-155, 1999

  Japan Society of Powder and Powder Metallurgy

Keywords

• synthesis of iron nitride
• Fe<SUB>16</SUB>N<SUB>2</SUB>
• Mössbauer effect
• magnetic property

Details

• CRID: 1390282681285389184
• NII Article ID: 10002261825
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.46.151
• COI: 1:CAS:528:DyaK1MXhvVelsrw%3D
• ISSN: 18809014
• ISSN: 05328799
• ISSN: http://id.crossref.org/issn/05328799
• ISSN: http://id.crossref.org/issn/00260797
• NDL BIB ID: 4655530
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4655530
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed